Li-ion battery analysis using Metrohm Ion Chromatography

The successful integration of solar, wind and hydropower with energy storage systems like batteries will play a pivotal role in reforming our society from being dependent on fossil fuels to be able to rely more on renewable energy sources. A major challenge is to design better batteries for large-scale applications such as electric vehicles (EVs) and grid storage, which will require higher energy and power densities, as well as a significant reduction in cost.

In response to this challenge, various “new” lithium battery concepts have been studied. A lot of research is going into these “advanced lithium batteries” and are available for commercial production.

Lithium-Ion Batteries

A?lithium-ion battery?or?Li-ion battery?is a type of rechargeable battery in which lithium ions?move from the negative electrode?through an electrolyte?to the positive electrode during discharge, and back when charging. Li-ion batteries use an intercalated lithium compound as the material at the positive electrode and typically graphite?at the negative electrode.

Li-ion batteries have a high energy density, no memory effect and low self-discharge.??A critical parameter for all these battery systems is “the role of the electrolyte”.

Advantages over traditional batteries

1. Lithium-ion batteries can be “fast” charged to 100% of capacity. A lithium battery saves on your electric bill, as it is up to 96% efficient and accepts both partial and rapid charging.
2. On average Lithium-Ion batteries?weigh 5 times less?than standard lead-acid batteries.
3. Not much infrastructure cost, no gas and no need for water, which eliminates all additional costs. The battery just works.
4. Lithium-ion batteries last 3-4 times longer, without losing effectiveness over time.

Metrohm Ion Chromatography – HIGHLY EFFICIENT MULTI-PARAMETER ANALYSIS OF ELECTROLYTES AND METALS SALTS

?Ion chromatography (IC) is an efficient and precise multi-parameter method to quantify impurities in lithium salts, decomposition products in electrolytes, as well as anions and cations in eluates of various battery raw materials.

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Author? K. Niranjan, Product Manager - Ion Chromatography, Metrohm India Private Limited